Automatically link Twitter usernames in WordPress

SUBMITTED BY: Guest

DATE: Dec. 26, 2013, 6:25 a.m.

FORMAT: PHP

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If you’re often quoting Twitter users on your blog, what about automatically link twitter usernames? Here is a nice regular expression to do so. Simply add this code to your functions.php file for it to work.

function twtreplace($content) {
	$twtreplace = preg_replace('/([^a-zA-Z0-9-_&])@([0-9a-zA-Z_]+)/',"$1<a href=\"http://twitter.com/$2\" target=\"_blank\" rel=\"nofollow\">@$2</a>",$content);
	return $twtreplace;
}

add_filter('the_content', 'twtreplace');   
add_filter('comment_text', 'twtreplace');